The problem with time travel is that you can't travel to a place where you don't exist.
时间旅行的难题在于,你无法前往自己不存在的地方。
计算机非常快、准确且愚蠢。人类非常慢、不准确且聪明。两者的结合是一种无法计算的力量。
History isn't what happened. History is just what historians tell us.